module errors

import v3.token
import term

// Kind lists kind values used by errors.
pub enum Kind {
    warning
    notice
    error
}

// str returns the string form for Kind.
pub fn (e Kind) str() string {
    return match e {
        .warning { 'warning' }
        .notice { 'notice' }
        .error { 'error' }
    }
}

// color supports color handling for Kind.
pub fn (e Kind) color(s string) string {
    return match e {
        .warning { term.yellow(s) }
        .notice { term.blue(s) }
        .error { term.red(s) }
    }
}

// error supports error handling for errors.
pub fn error(msg string, details string, kind Kind, pos token.Position) {
    eprintln(pos.str() + ' -> ' + term.bold(kind.color(kind.str())) + ': ' + msg)
    if details.len > 0 {
        eprintln(details)
    }
}